At a Rennaissance-fair-like event, a workshop had a vat of hot wax and would sell you a wick for $1 that you could keep dipping and cooling as much as you wanted. My autistic self took it literally and stayed for hours, ending up with a candle almost twice the length of the original wick and as thick as my forearm. The wick could not have been enough to support the weight and the vat was not that deep either, so I ended up dipping one end, then the other, cleaning the wick tip off to prevent it from disappearing. They must have lost some money on my candle but me walking around between the workshop and a tub of cool water with what looked like a giant dildo attracted a lot of attention to them, which made many children give it a try. None was patient enough to make a candle bigger than an electric toothbrush so they might have made it back with the advertising.